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Author Subbarao, Udumula ♦ Sarkar, Sumanta ♦ Peter, Sebastian C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ ABSORPTION SPECTROSCOPY ♦ CRYSTAL GROWTH ♦ CURIE-WEISS LAW ♦ ELECTRIC CONDUCTIVITY ♦ EUROPIUM ALLOYS ♦ FERMI GAS ♦ INDIUM BASE ALLOYS ♦ INTERMETALLIC COMPOUNDS ♦ LATTICE PARAMETERS ♦ MAGNETIC MOMENTS ♦ MAGNETIC SUSCEPTIBILITY ♦ MAGNETISM ♦ MONOCRYSTALS ♦ SILVER ALLOYS ♦ TETRAGONAL LATTICES ♦ X-RAY DIFFRACTION ♦ X-RAY SPECTROSCOPY
Abstract The compound EuAg{sub 4}In{sub 8} has been obtained as single crystals in high yield from reactions run in liquid indium. X-ray diffraction on single crystals suggests that EuAg{sub 4}In{sub 8} crystallizes in the CeMn{sub 4}Al{sub 8} structure type, tetragonal space group I4/mmm with lattice constants a=b=9.7937(2) Å and c=5.7492(2) Å. Crystal structure of EuAg{sub 4}In{sub 8} is composed of pseudo Frank–Kasper cages occupied by one europium atom in each ring, which are shared through the corner along the ab plane resulting in a three dimensional network. The magnetic susceptibility of EuAg{sub 4}In{sub 8} was measured in the temperature range 2–300 K, which obeyed Curie–Weiss law above 50 K. Magnetic moment value calculated from the fitting indicates the presence of divalent europium, which was confirmed by X-ray absorption near edge spectroscopy. Electrical resistivity measurements suggest that EuAg{sub 4}In{sub 8} is metallic in nature with a probable Fermi liquid behavior at low temperature. - Graphical abstract: The tetragonal EuAg{sub 4}In{sub 8} has been grown as single crystals from reactions run in liquid indium. Magnetic and XANES measurements suggest divalent nature of Eu and resistivity measurements suggest metallic nature. - Highlights: • EuAg{sub 4}In{sub 8} phase having tetragonal phase is grown by metal flux technique. • Magnetic and XANES measurements exhibit divalent nature of Eu in EuAg{sub 4}In{sub 8}. • Resistivity measurement suggests metallic nature and probable Fermi liquid behavior.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-03-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 226


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